Platen-operating mechanism.



A. SOHNEELOGH.

PLATEN OPERATING MECHANISM.

APPLIOATION FILED 000:. 9, 19oz.

903,5 1 2 Patented Nov. 10, 1908.

WITNESSES: E

5 New York, have invented certaln UNITED ares PATN Y AUGUST SOHNEELOGH, OF SYRACUSE, NEW YORK, ASSIGNOR TO E. G. STEARNS & 00., OF SYRACUSE, NEW- YORK.

PLATEN-OPERATING MECHANISM.

Original application filed May 9, 1902,

Specification of Letters Patent.

SerialNo. 106,524. Divided and this application filed October 9, 1902.

Patented Nov. 10, 1908.

Serial No. 126,602.

To all whom it may concern:

Be it known that 1, AUGUST SoH nnLoon, citizen of the United States, residingat Syracuse, in the county of Onondaga. and State of useful Improvements in Platen-Operating Mechanism; and I do hereby declare the following to be a full, clear tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a typewriting machine, andconsists in a new construction and arrangement of parts "by which the platen is supported and shifted into the upper case position and there locked.

This application is a division of myapplicationfiled May 9th, 1902, Serial No. 106,524.

My invention is shown in the drawing herewith, of which Figure l is a vertical lon itudinal section, showing the parts particu arly referred to and their osition in the machine. Fig. 11 shows in side elevation the up crease lock ing mechanism broken away i om the front of Fig. I.

In the figures, 1 indicates the main frame, 2 the key lever suitably supported thereon, on key lever bracket j 12 the key lever link connected by link y to type-bar 3, having integral stop 197 to engage with segment face 198, and hung on hanger 190, secured to segment 188 by screw 191.

13 is the rear bar grooved for balls 23, and

5 24 carriage side pieces, carrying the front bar of the carriage frame (not shown).

28 is the rear bar resting on the balls 23, and 30 the brackets on which are journaled arms for carrying the carriage rack by which the platen carriage is shifted step by step by the action of the key levers.

' 3:] is the spring barrel carrying gear 98 en gaging with carriage rack 128.

Journaled at each end of the machine on bearings 51 are the bell-crank levers connected respectively by links 52 and 53, to the shift-key levers 54 54, by the pivotscrew 180,, Shift-key lever 54 is carried on bracket 7' is cushioned by spring K, adjusted by screw to K..-and on the'left rests on pin 106,-on link sorthat when-either shiftfikey lever is denew andand exact descrippiece,

pressed, rod 31, carried on the upper ends of the bell-crank levers 50, is moved forward engaging with grooved roller )9 on roller bearing aria-58, hinged to the lower end of 6.1111 57, fixed on platen rod 45, whereby aid f laten rod isturned, raising arms 41 41, and

with them the platen holder bushing 33' and platen 186 into the u per case position.

Adjacent to the right hand shift-key lever is journaled on the frame of the machine the lock-lever 61 held up in normal position by spring 181, and provided with cam notch 182, whereby when said lock-lever is .de-

ressed, cam notch engages with pin on shift-key lever lockin .it in depressed posiby further depressing 1 tion until it is release said shift-key lever forcing the pin out of engagement with the notch 182, allowing 61 to be released and returned by its spring to normal position thus the shift-key. ever may be depressed by its own key as in the case of writing a single capital or by the lock-lever key, when it is desired to write several capitals. It will be understood that these levers cooperate to lock the shift-key lever in its lower osition by the form of the cam notch and t e angle at which the levers are arranged.

On brackets 40 of thecarriage is journaled the platen rod 45, on which are fixed the two swinging arms 41, carrying the platen holder on the cylinder shaft and bushings 33. The end pieces 24 have the downwardly extending guiding block 43, with which engage on each side the rollers 44 44 on the arms m m on the platen holder, operating as a guide to insure the movement in a vertical line of the platen holder as it is shifted from one case to the other Stops 47 and 48 on block 46, carriedon the side pieces 24, limit the upward and downward movement of the platen holder. -To support the swinging arm and counter-balance a portion of the weight of the platen, spring-277 is arranged on the side screw 278 and cooperating therewith; 49 is a slide bar for locking the platen onits arms.

Having thus described my invention, what I claim as new and-desireto secure'by Letters Patent, is-

whose tension may be adjusted by 1. In atypewriting-machine, the combithe s rings.

nation with the platen, the platen frame, the shift key lever and connections therefrom to the platen frame, of a lock lever arranged adjacent to theshift key lever havin a cam notch on its forward end, a pin on t e shift key lever to engage with said'camnotch, and

a spring to-r'eturn the lock lever to normal position, the cam being with the pinand depress the shift key lever and raise the platen when the lock lever is depressed to a certain extent, and to disengage from the in and release the lock lever when the shift ey lever is further depressed.

2. In the laten supporting and guiding mechanism 0 a front strike t ewriting machine, the combination with the frame and side pieces thereon, of downwardly extending guiding blocks on said side ieces, swinging arms suitably journaled on'tiie frame to support the platen and platen holder, down wardly extending roller arms on the platen holder on each side of said guiding blocks, and rollers on the roller arms the guiding blocks,

3. In the upper case locking mechanism of a typewriting machine, the combination with the shift key lever, the platen frame, .of a lock lever arranged adjacent to the shift key lever and having a cam notch on its forward end, of ahorizontal projecting lug or pin on the shift kej lever to engage with said cam notch, whereby the shiftkey leyer is locked in depressed-position by engagement of the cam notch with the pin, a finger piece on the lock lever, and a spring to restore lock lever to its elevated 0sition when released from enga ement Wit shift key lever.

4. n the platen supporting mechanism of a typewriting machine, the combination with the carriage frame, of side pieces on the frame, a rod 'ournaled on the frame, swinging arms on t 0 rod arranged above the side pieces, the platen carried onthe front ends of said arms, coil springs arranged between said swinging arms and the side pieces on each side and adjusting screws in the side pieces beneath the springs-to adjust the tension of 5. n a ty ewriting machine, the combination with t e platen, the platen frame, the shift-key lever the platen frame, of a lock lever arrangedadjacent to the shift key lever having a cam notch on its forward end, key lever to engage with said cam notch, and

a spring to return the lock leve'rto normal position, the cam being formed to engage witlrthe pin and depress the shift-key lever and raise the platen when the lock lever is depressed by the hand, and to disengage from the mend release the shift-key lever when sai shift-key lever is further depressed. I I .1 '6'. In the uppercaselocking mechanism of formed to engage engaging with further depression and connections therefrom to a pin on the shift in suitable" bearings,

dependently depressed by the hand, a horizontal projecting lugor pin on the shift-key lever to engage with said cam notch, where-- by theshift-key lever is A position by on agement of the cam notch with the pin, a gen piece on thelock lever, and a spring to restore lock lever into its elelocked in depressed va-ted position when released from engage ment with shift-key lever.

7. In the platen supporting mechanism of a typewrit' g machine, the combination with the carriage frame, of a swinging arm journaled thereon on each side, the platen carried on said arms, beveled bloc s on said frame near the front ends of said arms, and

upper and lower adjustable stops secured on said blocks to enga c with the'front ends of said arms, positively to limit their upand downmovement when shifted from one case position tothe other.

8. Ina ty ewriting machine, the combination with the platen, the platen frame, the shift key lever and connections therefrom to the platen frame, of a lock lever arranged adj went to the shiftkey'lever adapted to engage and depress the shift keylever to raise the platen, u on being de ressed and to lock the shift keylever when t e lock lever is in its extreme lower position, and to be released on of the shift-key lever and means to return thelock lever to its initial upper position when released.

In a typew'riting frame and connections between said lever and the laten frame whereby the platen may be el evated into upper case posit on, of guiding blocks suitably arranged in engagement with the platen holder to guide the vertical movement thereof, of strips suitably arranged to limit the movement 0 the platenholder, when shifted, a lock-lever arranged adjacent to the shift-key leverand adapted to operate the shift-key lever'to shift the laten when depressed and to lock said shiftliey' lever when inextreine lower position, said shift-key lever ada ted to be further depressed torelease the I dck lever and means to return the lock-lever to its-initial upper position when released. j

10. In a typewriting machine the comblnation with .the frame and theparriage thereon, of a platen frame carried bythe carriage, a platen in the platen frame, said frame being adapted to be rocked to elevate the platen, bell ;crankjleversoppositely arranged oppositely arranged shift key levers,-

machine, the combi nation with the shift-key lever the platen connections between the shift key levers and the bell crank levers, will operate the platen frame to elevate the whereby the latter will be rocked on the deplaten. v 10 pression of the former, a roller rod oarried by In testimony whereof I aflix my signature the upper arms of the bell crank-levers, and a in presence of two witnesses.

roller carried by the platen-frame in constant AUGUST SCHNEELOCH. engagement with said roller rod to ride Witnesses: thereon during the movement of the carriage, C. O. SOHOENEOK,

whereby depression of the shift key levers M. B. SMITH. 

